StyleSheetList-constructable.html

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This WPT test may be referenced by the following Test IDs:
- /css/cssom/StyleSheetList-constructable.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

  <head>

    <title>CSSOM - StyleSheetList does not include adopted style sheets</title>

    <link rel="help" href="https://drafts.csswg.org/cssom/#css-style-sheet-collections">

    <script src="/resources/testharness.js"></script>

    <script src="/resources/testharnessreport.js"></script>

    <style id="sheet1">

      body { width: 50%; }

    </style>

  </head>

  <body>

    <script>

      test(() => {

        const sheet = new CSSStyleSheet();

        document.adoptedStyleSheets = [sheet];

        var styleSheets = document.styleSheets;

        assert_equals(styleSheets.length, 1);

        assert_equals(styleSheets[0], sheet1.sheet);

      }, 'document.styleSheets does not include adopted style sheets');

    </script>

  </body>

</html>